“…Among the (33/60) studies describing the gender composition of their samples, 14 involved women majority samples [ 8 , 46 , 49 , 50 , 65 , 69 , 72 – 79 ], nine had men majority samples [ 43 , 46 , 67 , 68 , 80 – 84 ] and 10 had approximately equal gender representation [ 51 , 66 , 71 , 78 , 79 , 85 – 89 ]. Among the few studies (7/60) describing the racial or ethnic composition of their samples, six included a majority of white participants [ 50 , 72 , 77 , 81 , 86 , 90 ] and one had a mixed ethnic representation [ 82 ]. Ages of the samples ranged considerably with 17 focusing on elderly/older adults [ 46 , 53 , 66 , 68 – 70 , 73 , 74 , 76 , 78 , 80 , 81 , 83 , 87 , 91 – 93 ], 12 examined adults [ 8 , 43 , 49 , 65 , 71 , 72 , 75 , ...…”